Ms Alvarez wants to determine the seventh graders'
preferences for the location of the end-of-year field
trip. Which of the samples is representative of the
population?
a) all students in Ms. Alvarez's fifth-period class
b) all students in Ms. Alvarez's advisory group
c) every third student from an alphabetical list of all
students in the entire school district
d) every fifth student from an alphabetical list of all
seventh graders in the school